Uptake and reduction of arsenate by Dunaliella sp.

Osamu Takimura, Hiroyuki Fuse, Katsuzi Murakami, Kazuo Kamimura, Yukiho Yamaoka

研究成果: Article査読

30 被引用数 (Scopus)

抄録

Uptake and reduction of arsenate [AS(V)] by Dunaliella sp. cells were determined to investigate the metabolic processes of arsenic in the alga. Cellular uptake of arsenic by Dunaliella sp. cells was markedly affected by the form of arsenic in the medium. The content of arsenic taken up by Dunaliella sp. cells increased rapidly with time on addition of As(V) to the medium. However, in the case of addition of arsenite [As(III)], the gradient of arsenic uptake by Dunaliella sp. cells was low, and arsenic content was small. In the watersoluble fraction of arsenic taken up by Dunaliella sp. cells with exposure to As(V), arsenic was in the forms of organic arsenic, As(V) and As(III). The content of As(V) in the water-soluble fraction increased with exposure time. The content of As(III) also increased with time, but remained constant after 5 h of exposure. On the other hand, organic arsenic content was small and did not increase with time. It was found that Dunaliella sp. takes up As(V) and readily reduces it to As(III).

本文言語English
ページ(範囲)753-756
ページ数4
ジャーナルApplied Organometallic Chemistry
10
9
DOI
出版ステータスPublished - 1996 11
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 無機化学

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